Maassen, I.T.H.M., S.P.J. Kremers, and A.N. Mudde (2004), "Smoking initiation among Gambian adolescents: social cognitive influences and the effect of cigarette sampling", Health Education Research, 19, 551-560.
Smoking is harmful to your health.
It is difficult to quit smoking.
It is safe to smoke for a year or tow.
Smoke from other people's cigarettes is harmful.
Smoking is alright if you don't inhale.
Smoking is only harmful when you smoke a lot.